/*
Copyright (c) 2010, Daniele Simonetti
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of the <organization> nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef QPLAYLISTENTRYMODEL_H
#define QPLAYLISTENTRYMODEL_H

#include <QAbstractListModel>
#include <QStringList>
#include <QUrl>
#include <QDir>

class PlaylistEntry;
class IPlaylistReader;
class IPlaylistWriter;

enum PlaybackModes
{
    NoRepeat,
    RepeatOne,
    RepeatAll,
    Shuffle
};

class PlayList : public QAbstractListModel
{
    Q_OBJECT
public:
    explicit PlayList(QObject *parent = 0);
    ~PlayList();

    PlaylistEntry*          at  (const QModelIndex & index) const;
    const QModelIndex &     currentIndex()                  const;
    void                    setCurrentIndex(QModelIndex &)       ;
    QList<PlaylistEntry*>   allEntries()                    const;
    QModelIndex             indexOf(const PlaylistEntry* e) const;

    PlaylistEntry*  current()                               const;
    PlaylistEntry*  next();
    PlaylistEntry*  prev();

    void            setSortOrder(Qt::SortOrder);
    void            setPlayMode(PlaybackModes);
    Qt::SortOrder   sortOrder()                             const;
    PlaybackModes   playMode()                              const;
    quint32         length()                                const;
    QModelIndex PlayList::search(const QString& search, QList<QModelIndex>& matches,
                                 const QModelIndex & start = QModelIndex()) const;
signals:

public slots:
    void addFile    (QString file, int beginRow = -1);
    void addFiles   (QStringList files, QDir baseDir = QDir("."), int beginRow = -1);
    void addURI     (QUrl uri, int beginRow = -1);
    void addURIs    (QList<QUrl> urls, int beginRow = -1);
    void addPlaylist(IPlaylistReader* pls);
    bool saveOnDisk (IPlaylistWriter* w = NULL);

    void sortByFilename ();
    void sortByTitle    ();
    void shuffle        ();
    void clear          ();    

protected:
    int rowCount            ( const QModelIndex & parent = QModelIndex() ) const;
    QVariant data           ( const QModelIndex & index, int role = Qt::DisplayRole ) const;
    bool insertRows         ( int row, int count, const QModelIndex & parent = QModelIndex() );
    bool removeRows         ( int row, int count, const QModelIndex & parent = QModelIndex() );
    bool dropMimeData       ( const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent );
    bool setData            ( const QModelIndex & index, const QVariant & value, int role = Qt::EditRole );
    bool setData            ( const QModelIndex & index, PlaylistEntry* value, int role = Qt::EditRole );
    QMimeData *mimeData     (const QModelIndexList &indexes) const;
    QStringList mimeTypes   () const;
    Qt::ItemFlags   flags   (const QModelIndex &index) const;
    Qt::DropActions supportedDropActions()          const;

    //QList<QVariant> _entries;
    QList<PlaylistEntry*> _entries;
private:
    QModelIndex         _current;
    IPlaylistWriter*    _writer;
    Qt::SortOrder       _sortOrder;
    PlaybackModes       _playMode;
};

#endif // QPLAYLISTENTRYMODEL_H
